6533b86dfe1ef96bd12c9417

RESEARCH PRODUCT

Study ofX(3915)→J/ψωin two-photon collisions

T. LueckGabriele SimiC. L. DavisAbner SofferDmytro KovalskyiG. De NardoJ. P. LeesCh YècheG. JacksonC. BüngerMaria Roberta MongeJ. A. MckennaE. PaoloniA. M. GabareenW. T. FordTim AdyeD. LindemannO. HamonCorrado AngeliniStephen SekulaY. B. PanR. KowalewskiS. H. RobertsonV. SantoroR. D. KassS. StrackaS. EmeryHerbert KochB. C. WrayK. GriessingerA. JawaheryG. CibinettoP. KimV. ZieglerD. Lopes PegnaA. Y. RakitinE. GraugesR. BartoldusBruce SchummA. KhanR. M. WhiteM. Franco SevillaV. P. DruzhininC. BozziMario GiorgiD. SuC. CartaroE. FeltresiMarcello RotondoS. NelsonA. OyangurenA. P. OnuchinM. SigamaniSridhara DasuElisa GuidoJ. L. RitchieM. PiccoloE. PrencipePh LerusteS. SittJ. F. BenitezN. ArnaudS. BettariniDenis DerkachK. HonscheidC. A. ChavezV. B. GolubevSw. BanerjeeL. M. CremaldiW. F. WangSimon AkarM. FritschB. LindquistS. ZambitoF. SimonettoM. Lo VetereG. LynchE. TorrenceA. M. RulandG. BatignaniG. J. KingG. OnoratoG. P. Dubois-felsmannR. CenciP. LewisA. ZalloC. TouramanisR. H. SchindlerM. PosoccoM. BondioliM. L. KocianX. NguyenA. J. EdwardsPhilippe GrenierH. W. WulsinJ. R. FryM. MuneratoHeiko LackerM. MandelkernE. Ben-haimR. AyadR. AyadD. R. PeimerB. T. MeadowsG. RavenO. GrünbergC. H. ChengA. M. LutzR. Y. SoAndrei GritsanR. AndreassenP. RoudeauW. J. WisniewskiD. J. BardR. FreyM. H. KelseyD. G. HitlinH. AhmedB. N. RatcliffM. D. SokoloffEleonora LuppiW. ParkA. AdametzS. PassaggioR. SchwierzR. KroegerColin JessopR. PrepostR. De SangroS. L. WuT. S. MattisonChunhui ChenA. P. WagnerMauro MorandinA. J. MartinezG. RizzoS. LuitzA. StocchiClaudio CampagnariP. PatteriL. PiemonteseE. GabathulerR. FacciniF. FerrarottoC. HastD. J. LangeG. PireddaJ. M. DorfanB. BhuyanB. G. FulsomM. L. PerlM. MoriiP. SonnekA. N. YushkovF. Le DiberderA. PalanoM. K. SullivanP. TarasE. P. SolodovNicola NeriR. GorodeiskyM. SimardD. A. RobertsA. HafnerG. GrosdidierS. PacettiR. CowanJ. ChauveauMaurizio BiasiniF. C. PorterD. J. AsgeirssonC. HeartyJ. D. RichmanA. A. SalnikovW. H. TokiT. J. GershonR. Baldini-ferroliD. KirkbyG. VasseurJ. KrosebergK. T. FloodPatricia R. BurchatRoger BarlowRoger BarlowMartino MargoniB. MalaescuE. M. T. PuccioV. PrasadRoberto CalabreseI. M. PeruzziM. GasperoN. GagliardiOwen Rosser LongA. SeidenF. FortiC. VoßPablo Villanueva-perezP. J. ClarkH. A. NealS. M. SpanierJ. OcarizE. BehnD. MonorchioS. I. SerednyakovJ. P. ColemanF. BianchiMatteo RamaD. DujmicElisa ManoniS. PlayferA. V. TelnovG. A. CowanZ. C. HuardJ. W. GaryC. C. YoungW. T. MeyerD. BettoniA. M. EisnerL. Li GioiJ. Va’vraJ. A. ErnstS. PrellP. D. DaunceyT. HartmannR. CheaibA. E. RubinGiulia CasarosaR. F. SchwittersM. A. MazzoniG. WormserD. B. MacfarlaneL. SunD. J. SummersA. R. BuzykaevR. J. SobieF. LiuL. VitaleF. AnulliM. T. GrahamAlessandro GazA. RoodmanX. C. LouG. Hamel De MonchenaultJames H CochranV. PoireauAlberto CervelliF. Martinez-vidalJ. M. LoseccoR. ContriJ. J. WalshR. SaccoD. GambaG. M. VitugM. V. PurohitJ. AlbertM. WittgenAdrian John BevanA. LusianiN. B. SinevDominik MüllerD. E. HutchcroftC. DallapiccolaI. GarziaD. H. WrightC. PatrignaniT. LeddigV. TisserandT. SchroederE. FioravantiT. PulliamD. N. BrownRoland WaldiH. R. BandT. M. HongN. GuttmanW. S. LockmanB. StuguB. EchenardG. D. LaffertyF. FerroniD. BernardW. DunwoodieG. MarchioriB. SpaanW. GradlR. GodangR. GodangH. L. LynchM. R. ConveryC. L. LeeA. J.s. SmithL. LanceriM. BellisR. C. FieldD. M. StromPaul Fraser HarrisonG. FinocchiaroV. LuthM. VerderiM. S. AlamChristopher WestYu I. SkovpenA. SnyderF. F. WilsonU. MallikAndrea Rodriguez PerezJames R. WilsonP. M. PatelP. M. PatelH. BriandT. S. MiyashitaStephen Robert WagnerK. R. SchubertG. EigenP. C. BloomG. SciollaB. HamiltonM. EbertA. RossiZ. J. GuoJoseph IzenWalter R. InnesM. CarpinelliK. Yu TodyshevM. H. SchuneU. UwerR. StroiliI. M. NugentJ. Garra TicoD. S. ChaoM. DavierT. E. LathamN. TasneemP. LundA. CalcaterraH. AtmacanAidan Randle-condeMarco BombenV. E. BlinovDouglas WrightG. R. BonneaudD. W. G. S. LeithB. OberhofM. J. LewczukAndrew LankfordG. CalderiniE. A. KravchenkoP. BiassoniCrisostomo SciaccaD. AstonE. O. OlaiyaFlorian Urs BernlochnerF. PalomboA. G. DenigJ. E. BrauJames D. OlsenL. T. KerthYu. G. KolomenskyEnrico RobuttiP. OngmongkolkulF. Di LodovicoD. J. PayneU. NauenbergH. H. F. ChoiMaurizio MartinelliJ. M. RoneyJ. G. Smith

subject

PhysicsNuclear and High Energy PhysicsPhoton010308 nuclear & particles physicsBranching fractionResonance01 natural sciencesMeasure (mathematics)law.inventionNuclear physicslawProduct (mathematics)0103 physical sciencesHigh Energy Physics::Experiment010306 general physicsCollider

description

We study the process $\gamma \gamma \to J/\psi \omega$ using a data sample of 519.2 $fb^{-1}$ recorded by the BaBar detector at SLAC at the PEP-II asymmetric-energy $e^+ e^-$ collider at center-of-mass energies near the $\Upsilon(nS)$ ($n = 2,3,4$) resonances. We confirm the existence of the charmonium-like resonance X(3915) decaying to $J/\psi \omega$ with a significance of 7.6 standard deviations, including systematic uncertainties, and measure its mass $(3919.4 \pm 2.2 \pm 1.6) MeV/c^2$ and width $(13 \pm 6 \pm 3) MeV$, where the first uncertainty is statistical and the second systematic. A spin-parity analysis supports the assignment $J^P=0^+$ and therefore the ident ification of the signal as due to the $\chi_{c0}(2P)$ resonance. In this hypothesis we determine the product between the two-photon width and the final state branching fraction to be $(52 \pm 10 \pm 3) eV$

https://doi.org/10.1103/physrevd.86.072002